本文为大家讲解的是Sorting Array Values in PHP(数组排序),感兴趣的同学参考下。 有时候，你可能需要对数组内的值进行排序，那么就可以参考下面的文章
本文为大家讲解的是Sorting Array Values in PHP(数组排序),感兴趣的同学参考下。
有时候，你可能需要对数组内的值进行排序，那么就可以参考下面的文章。
$full_name = array();
$full_name["Roger"] = "Waters";
$full_name["Richard"] = "Wright";
$full_name["Nick"] = "Mason";
$full_name["David"] = "Gilmour";
To sort this array, you just use the assort( ) function. This involves nothing more complex than typing the word asort, followed by round brackets. In between the round brackets, type in the name of your Associative array:
asort($full_name);
The letter "a" tells PHP that the array is an Associative one. (If you don't have the "a" before "sort", your key names will turn in to numbers!). The "a" also tells PHP to sort by the Value, and NOT by the key. In our script above, the surnames will be sorted. If you want to sort using the Key, then you can use ksort() instead.
If you have a Scalar array (numbers as Keys), then you leave the "a" off. Like this:
$numbers = array( );
$numbers[]="2";
$numbers[]="8";
$numbers[]="10";
$numbers[]="6";
sort($numbers);
print $numbers[0] ;
print $numbers[1];
print $numbers[2] ;
print $numbers[3];
The numbers are then sorted from lowest to highest. If you want to sort in reverse order then you need the following:
rsort( ) – Sorts a Scalar array in reverse order
arsort( ) - Sorts the Values in an Associative array in reverse order
krsort( ) - Sorts the Keys in an Associative array in reverse order
In the next part, we look at how to get a random value from an array.
标签: Sorting Array Values in PHP 数组 排序
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